<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <title>Document</title>
</head>
<body>
    

    <div id="app">
        <h2>{{show}}</h2>
        <h1>{{name}}</h1>
        <button @Click="halo">屠龙宝刀点击就送</button>
    </div>

    <script>
        var vue = new Vue({
            el:"#app",
            data: {
                name:"halo  441",
                show:""
            },
            methods: {
                halo() {
                    this.show = "这都信？"
                }
            }
        })
    </script>
</body>
</html>